Panasonic SB-WA520EB Скачать руководство пользователя страница 12 | Manualshive

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Panasonic SB-WA520EB Скачать руководство пользователя страница 12

4 Protection Circuitry

The protection circuitry may have operated if either of the following conditions are noticed:

●

No sound is heard when the power is turned on.

●

Sound stops during a performance.

The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative
speaker connection wires are

“shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the
amplifier are used.

If this occurs, follow the procedure outlines below:

1. Turn off the power.

2. Determine the cause of the problem and correct it.

3. Turn on the power once again after one minute.

Note :

When the protection circuitry functions, the unit will not operate unless the power is first turned off
and then on again.

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Содержание SB-WA520EB

Страница 1: ...der 2 1 About lead free solder PbF 3 Before Repair and Adjustment 4 Protection Circuitry 5 Connection of the Speaker Cables 6 Disassembly Procedure 6 1 Disassembly flow chart 6 2 Disassembly of the Speaker Unit and Checking of the P C B s 7 Connection of the Speaker Wiring 8 Block Diagram 9 Schematic Diagram 10 Printed Circuit Board 11 Wiring Connection Diagram PV PV PV PV ...

Страница 2: ... Transistors and Diodes 13 Parts Location and Replacement Parts List 13 1 Cabinet 13 1 1 Cabinet Parts Location 13 1 2 Cabinet Parts List 13 2 Electrical Parts List 13 3 Packing Materials Accessories Parts List 13 4 Packaging ...

Страница 3: ...ut sound pressure 80 dB W 1 0 m Frequency range 32 Hz 220 Hz 16 dB 36 Hz 190 Hz 10 dB Dimensions W x H x D 209 x 361 x 463 mm Mass 11 kg General Power supply AC 230 240 V 50 Hz EB AC 230 V 50 Hz EG Power consumption 220 W Power consumption in standby mode 0 7 W Note Specifications are subject to change without notice Mass and dimensions are approximate System SC HT520EB Music Center SA HT520EB Sat...

Страница 4: ...oofer SB WA520EG System SC HT520EG Music Center SA HT520EG Satellite speakers SB HT520P Active Subwoofer SB WA520EG SB HT520P S consists of SB FS520P S x 4 and SB PC520P S x 1 2004 Panasonic AVC Networks Singapore Pte Ltd All rights reserved Unauthorized copying and distribution is a violation of law TOP NEXT ...

Страница 5: ...1 Safety Precautions TOP PREVIOUS NEXT 1 1 GENERAL GUIDELINES 1 1 1 LEAKAGE CURRENT COLD CHECK 1 1 2 LEAKAGE CURRENT HOT CHECK See Figure 1 TOP PREVIOUS NEXT ...

Страница 6: ... by the short circuit 2 After servicing see to it that all the protective devices such as insulation barriers insulation papers shields are properly installed 3 After servicing make the following leakage current checks to prevent the customer from being exposed to shock hazards 1 1 1 LEAKAGE CURRENT COLD CHECK 1 1 2 LEAKAGE CURRENT HOT CHECK See Figure 1 TOP PREVIOUS NEXT ...

Страница 7: ...h an ohmmeter between the jumpered AC plug and each exposed metallic cabinet part on the equipment such as screwheads connectors control shafts etc When the exposed metallic part has a return path to the chassis the reading should be between 1MΩ and 5 2Ω When the exposed metal does not have a return path to the chassis the reading must be Fig 1 TOP PREVIOUS NEXT ...

Страница 8: ...ity to measure the potential across the resistor 4 Check each exposed metallic part and measure the voltage at each point 5 Reverse the AC plug in the AC outlet and repeat each of the above measurements 6 The potential at any point should not exceed 0 75 volts RMS A leakage current tester Simpson Model 229 or equivalent may be used to make the hot checks leakage current must not exceed 1 2 milliam...

Страница 9: ...2 Handling the Lead free Solder TOP PREVIOUS NEXT 2 1 About lead free solder PbF TOP PREVIOUS NEXT ...

Страница 10: ... point is 50 70 F 30 40 C higher Please use a high temperature soldering iron In case of the soldering iron with temperaturecontrol please set it to 700 20 F 370 10 C Pb free solder will tend to splash when heated too high about 1100 F 600 C When soldering or unsoldering please completely remove all of the solder on the pins or solder area and be sure to heat the soldering points with the Pb free ...

Страница 11: ...O NOT SHORT CIRCUIT DIRECTLY with a screwdriver blade for instance as this may destroy solid state devices After repairs are completed restore power gradually using a variac to avoid overcurrent Current consumption at AC 230 240V 50Hz in NO SIGNAL mode should be 250 mA EB Current consumption at AC 230V 50Hz in NO SIGNAL mode should be 250 mA EG TOP PREVIOUS NEXT ...

Страница 12: ...ple the positive and negative speaker connection wires are shorted or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used If this occurs follow the procedure outlines below 1 Turn off the power 2 Determine the cause of the problem and correct it 3 Turn on the power once again after one minute Note When the protection circuitry functions the unit w...

Страница 13: ...rom the left speaker to the left terminal 1 Strip off the outer covering and twist the center conductor Make sure the bare ends of the wires are not unravelled If they are twist them tight again 2 Insert the wire to the rear panel of the unit and close the lever Notes To prevent damage to circuitry never short circuit positive and negative speaker wires Be sure to connect only positive red wires t...

Страница 14: ...nd replacing the main components 2 For reassembly after operation checks or replacement reverse the respective procedures Special reassembly procedures are described only when required 3 Select items from the following index when checks or replacement are required Contents Disassembly of the Speaker Unit Main Component Replacement Procedures 6 1 Disassembly flow chart 6 2 Disassembly of the Speake...

Страница 15: ...REVIOUS NEXT The following chart is the procedure for disassembling the casing and inside parts for internal inspection when carrying out the servicing To assemble the unit reverse the steps shown in the chart below TOP PREVIOUS NEXT ...

Страница 16: ...6 2 Disassembly of the Speaker Unit and Checking of the P C B s TOP PREVIOUS NEXT Step 1 Remove all the screws Step 2 Remove the stand base ...

Страница 17: ...Step 3 Remove all the screws from the bottom of the speaker unit Step 4 Remove the screws from the rear panel s speaker unit guide ...

Страница 18: ...Step 5 Remove the screws from the subwoofer Disassembly of Power Amp unit ...

Страница 19: ...Step 6 Remove 2 screws from the Power Amp unit ...

Страница 20: ...Step 7 Pull out the Power Amp unit slightly as shown Note Be careful of attach wire at CN506 ...

Страница 21: ...Step 8 Release the connector CN506 then pull out the entire Power Amp unit ...

Страница 22: ...Steps 9 10 Remove all the screws Step 11 Release the connector CN507 to remove the rear panel ...

Страница 23: ... Checking for the Power and AC Inlet P C B Step 12 Remove the screws from the AC Inlet P C B ...

Страница 24: ...Steps 13 14 Remove the screws ...

Страница 25: ...Step 15 Place the Power P C B and the AC Inlet P C B as shown for checking Checking for the Transformer P C B ...

Страница 26: ...Step 16 Remove the screws ...

Страница 27: ...Step 17 Place the P C B as shown for checking Replacement of the Power IC and Transistor ...

Страница 28: ...Step 1 Desolder the Power IC and Transistor terminals Step 2 Remove the screws from the IC501 ...

Страница 29: ...Step 3 Remove the screw Step 4 Replacement of the Power IC and Transistor ...

Страница 30: ...7 Connection of the Speaker Wiring TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...

Страница 31: ...8 Block Diagram TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...

Страница 32: ...ty notice Components identified by mark have special characteristics important for safety Furthermore special parts which have purposes of fire retardant resistors high quality sound capacitors low noise resistors etc are used Whenreplacing any of components be sure to use only manufacturer s specified parts shown in the parts list Caution IC LSI and VLSI are sensitive to static electricity Second...

Страница 33: ...10 Printed Circuit Board TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...

Страница 34: ...11 Wiring Connection Diagram TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...

Страница 35: ...12 Illustration of IC s Transistors and Diodes TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...

Страница 36: ...ations can be used for all areas Capacitor values are in microfarads μF unless specified otherwise P Pico farads pF F Farads Resistance values are in ohms unless specified otherwise 1K 1 000 OHM The marking RTL indicates that the Retention Time is limited for this items After the discontinuation of this assembly in production the item will continue to be available for a specific period of time The...

Страница 37: ...13 3 Packing Materials Accessories Parts List 13 4 Packaging TOP PREVIOUS NEXT ...

Страница 38: ...13 1 Cabinet TOP PREVIOUS NEXT 13 1 1 Cabinet Parts Location 13 1 2 Cabinet Parts List TOP PREVIOUS NEXT ...

Страница 39: ...13 1 1 Cabinet Parts Location TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...

Страница 40: ...255 SJ STAND ORNAMENT M 5 RGRX0033C AJ REAR PANEL M EG 5 RGRX0033C BJ REAR PANEL M EB 6 REM0072 3 FAN M 7 SHE187 6J PCB SUPPORT M 8 RMN0203 PCB HOLDER M 9 RMRX0047 J LED HOLDER M 10 RKAX0018 KJ LEG CUSHION M 11 RMC0158 S TR FIXTURE M 12 XTW3 15T SCREW M 13 RHD30092 SCREW M 14 XTB3 16AFZ SCREW M 15 XTB3 20JFZ SCREW M 16 XTB4 15AFZ SCREW M 17 XTBS3 8JFZ1 SCREW M 18 XTS4 20JFZ SCREW M 19 XYC26 CJ6FZ ...

Страница 41: ...C AMP M TRANSISTORS Q501 KTC3199GRTA TRANSISTOR M Q502 KTC3199GRTA TRANSISTOR M Q503 KTC3199GRTA TRANSISTOR M Q505 KTC3199GRTA TRANSISTOR M Q506 B1GCCFJJ0015 TRANSISTOR M Q507 KTC3199GRTA TRANSISTOR M Q508 KTA12710YTA TRANSISTOR M Q509 KTC3199GRTA TRANSISTOR M Q510 KTC3199GRTA TRANSISTOR M Q511 KTC2026 TRANSISTOR M Q513 KTC3199GRTA TRANSISTOR M Q514 KTC3199GRTA TRANSISTOR M Q515 KTC3199GRTA TRANSI...

Страница 42: ...513 B0HARM000017 DIODE M D514 B0HARM000017 DIODE M D515 B0EAKM000122 DIODE M D516 B0EAKM000122 DIODE M D517 B0HARM000017 DIODE M D518 B0HARM000017 DIODE M D519 B0AACK000004 DIODE M D524 SLI325URCT31 DIODE M D525 B0BA6R600008 DIODE M D527 B0EAKM000122 DIODE M D528 B0EAKM000122 DIODE M D529 B0EAKM000122 DIODE M D530 B0EAKM000122 DIODE M D533 B0BA5R100013 DIODE M CONNECTORS CN501 K1FB125B0095 SYSTEM ...

Страница 43: ...E COIL M L505 G0AR76Y00001 CHOKE COIL M T501 ETP76VSU62CA POWER TRANSFORMER M T502 G4C2AAJ00005 BACK UP TRANSFORMER M COMPONENT COMBINATION Z501 ERZV10V511CS ZENER M SPEAKER SP1 EAST17PL21C6 WOOFER M RELAY RLY501 RSY0040M 0 PRIMARY RELAY M FUSES F1 K5D202BK0005 250V 2A FUSE M FUSE HOLDERS FC501 EYF52BC FUSE HOLDER M FC502 EYF52BC FUSE HOLDER M FUSE PROTECTOR FP1 K5G502AA0002 5A FUSE PROTECTOR M ...

Страница 44: ...1000027 TERMINALS M WIRES W1 REE1205 WIRE UNIT M W2 REE1204 WIRE UNIT M W500 REX1146 WIRE UNIT M W505 RWJ1103280XX 3P STRAND TYPE WIRE M RESISTORS R401 ERDS2TJ224T 220K 1 4W M R402 ERDS2TJ102T 1K 1 4W M R403 ERDS2TJ104T 100K 1 4W M R501 ERDS2TJ472T 4 7K 1 4W M R502 ERDS2TJ472T 4 7K 1 4W M R503 ERDS2TJ153T 15K 1 4W M R504 ERDS2TJ153T 15K 1 4W M R505 ERDS2TJ153T 15K 1 4W M R506 ERDS2TJ153T 15K 1 4W ...

Страница 45: ... M R524 ERDS2TJ124T 120K 1 4W M R525 ERDS2TJ154T 150K 1 4W M R526 ERDS2TJ124T 120K 1 4W M R527 ERDS2TJ124T 120K 1 4W M R528 ERDS2TJ154T 150K 1 4W M R529 ERDS2TJ223T 22K 1 4W M R530 ERD25FVJ1R0T 1 1 4W M R531 ERD25FVJ1R0T 1 1 4W M R532 ERDS2TJ472T 4 7K 1 4W M R533 ERDS1FVJ100T 10 1 2W M R534 ERDS1FVJ100T 10 1 2W M R535 ERDS1FVJ100T 10 1 2W M R536 ERDS1FVJ100T 10 1 2W M R537 ERDS1FVJ100T 10 1 2W M R...

Страница 46: ...M R561 ERDS2TJ101T 100 1 4W M R565 ERDS1FVJ392T 3 9K 1 2W M R566 ERDS2TJ271T 270 1 4W M R567 ERDS1FVJ152T 1 5K 1 2W M R568 ERDS2TJ151T 150 1 4W M R569 ERDS1FVJ392T 3 9K 1 2W M R570 ERDS2TJ103T 10K 1 4W M R571 ERDS2TJ332T 3 3K 1 4W M R572 ERDS2TJ223T 22K 1 4W M R573 D0XGR10JA005 0 1 1 10W M R575 ERDS2TJ682T 6 8K 1 4W M R577 ERDS2TJ152T 1 5K 1 4W M R578 ERDS2TJ103T 10K 1 4W M R579 ERDS2TJ332T 3 3K 1...

Страница 47: ...KB5 1000P 50V M C503 ECBT1H102KB5 1000P 50V M C504 ECBT1H681KB5 680P 50V M C505 ECBT1H102KB5 1000P 50V M C506 ECBT1H102KB5 1000P 50V M C507 ECBT1H180JC5 18P 50V M C508 ECBT1H180JC5 18P 50V M C509 ECBT1H220JC5 22P 50V M C510 ECBT1H220JC5 22P 50V M C511 ECBT1H220JC5 22P 50V M C512 ECBT1H220JC5 22P 50V M C513 F1D1H473A012 0 047 50V M C514 ECA0JM101B 100 6 3V M C515 ECKR2H103ZF5 0 01 500V M C516 ECKR2...

Страница 48: ... 3V M C539 ECEA0JKA221B 220 6 3V M C540 ECEA1HKA2R2B 2 2 50V M C541 ECEA1CKA100B 10 16V M C543 ECBT1H102KB5 1000P 50V M C544 ECA1HM101B 100 50V M C545 F1D1H1040002 0 1 50V M C546 ECA1VM332B 3300 35V M C547 F2A1V472A155 4700P 35V M C548 F2A1V472A155 4700P 35V M C549 ECA1VM332B 3300 35V M C550 ECBT1C103NS5 0 01 16V M C551 ECBT1H103KB5 0 01 50V M C552 F1D1H1040002 0 1 50V M C553 ECQE1104KF3 0 1 100V ...

Страница 49: ... 50V M C563 ECQV1H823JL3 0 082 50V M C564 ECBT1C122KR5 1200P 16V M C565 F1D1H1040002 0 1 50V M C566 F1D1H1040002 0 1 50V M C567 ECA1HM100B 10 50V M C568 ECBT1C103NS5 0 01 16V M C569 F1D1H473A012 0 047 50V M TOP PREVIOUS NEXT ...

Страница 50: ...13 3 Packing Materials Accessories Parts List TOP PREVIOUS NEXT Ref No Part No Part Name Description Remarks PACKING MATERIALS P1 RPNX0232 POLYFOAM M P2 RPFX0071 MIRAMAT BAG M TOP PREVIOUS NEXT ...

Страница 51: ...13 4 Packaging TOP PREVIOUS TOP PREVIOUS ...

Страница 52: ......

Страница 53: ......

Страница 54: ...B0JAPG000019 MA2C700A0F B0BA6R600008 SLI325URCT31 B0BA9R600002 C0AABB000055 RSN311W64B P 1 26 1 4 8 5 E C B KTA12710YTA C E B B C E A Ca Anode Cathode B0BA5R100013 A Ca Anode Cathode A Ca Cathode Anode Anode Cathode A Ca Anode Cathode A Ca B0EAKM000122 Cathode A Ca Anode ...

Страница 55: ...1 JK500 T502 SUB TRANSFORMER W2 W1 CN502 BRW W1 W2 BLU TO MAIN UNIT CENTER SPEAKER SURROUND RIGHT SPEAKER FRONT RIGHT SPEAKER FRONT LEFT SPEAKER SURROUND LEFT SPEAKER POWER P C B LED P C B AC INLET P C B TRANSFORMER P C B FAN SPEAKER WOOFER 1 2 3 25 1 24 2 CN501 JK502 1 2 1 2 3 CN506 CN507 7 1 CP502 CN503 3 2 1 H505B W505 JK501 4 2 3 1 6 2 5 1 ...

Страница 56: ...C533 C513 CN506 CN501 J521 J408 J506 J507 J508 J509 J515 J531 J533 J538 J539 J571 J572 J573 J574 J575 J580 J581 J591 J592 J593 J594 J595 J596 J528 C563 C562 C564 R592 R597 R573 R594 R595 R593 E500 J504 R591 C561 C566 C565 J550 C568 R599 R571 R572 Q513 Q514 J517 R596 IC502 JK501 J514 J552 J519 J570 J409 R403 J410 C525 R536 CN507 C521 C529 R565 C552 R523 R501 R519 B C E B C E B C E B C E B C E B C E...

Страница 57: ...582 J583 1 3 J505 E501 R567 C567 D533 J566 J518 R575 J551 J585 FP1 5A C551 J541 R402 Q520 J418 B C E B C E B C E B C E 1 2 3 1 2 3 4 5 6 7 8 9 10 11 12 2 C515 D518 C501 C502 C503 C504 R514 R525 C508 C507 C510 R524 R526 R516 502 Q503 D512 D516 C516 01 C506 C505 R529 R556 Q510 R554 C537 Q508 R559 C536 Q509 R557 C538 R561 D505 R553 Q507 R550 R552 D506 R532 R513 C546 C547 D515 C517 C545 J510 J564 J584...

Страница 58: ... 7K R510 4 7K R507 3 9K R511 15K R512 15K R508 3 9K R541 100 C516 0 01 C515 0 01 C517 0 01 R542 100 R544 100 R402 1K Q503 R532 4 7K R523 120K R524 120K R526 120K R527 120K C537 0 1 R554 820K C513 0 047 R519 820K R520 22K C514 6 3V100 R529 22K R530 1 R531 1 R521 10K R522 27K C529 0 1 R549 47K R547 390K C534 50V33 R548 330K R553 56K R550 10K C536 16V33 R561 100 R560 10K R559 56K R558 18 C538 6 3V100...

Страница 59: ...C546 35V3300 D515 D516 B0EAKM000122 C545 0 1 R570 10K C549 35V3300 C548 35V4700 C554 0 1 C553 0 1 C544 50V100 R568 150 C543 1000P R569 3 9K C560 50V10 C567 50V10 R598 1 5K R567 1 5K C520 0 047 C521 0 047 C522 0 047 C523 0 047 C569 0 047 R535 10 R536 10 R537 10 R538 10 GND SYNC SYS6V HELP D516 FP1 K5G502AA0002 FP1 5A Q514 H505A W505 D524 SLI325URCT31 R577 1 5K D515 C552 0 1 D509 B0BA5R100013 R505 1...

Страница 60: ...Q517 VOLTAGE REGULATOR F1 Z501 Q501 Q502 SWITCH DC_DET Q520 INTERFACE SWITCH Q511 MUTE_H Q515 Q519 DCDET SWITCH VOLTAGE REGULATOR D513 D515 D517 D511 D512 D516 D518 T501 T502 D508 SUBAC2 SUBAC1 TO MAIN BLOCK JK2000 OF SA HT520E EB EG S FL1 FL2 POWER HIC DUAL LOW NOISE OP AMP SIGNAL LINES IC501 RSN311W64B P JK500 AC INLET RLY501 POWER TRANSFORMER IC502 C0AABB000055 SUB TRANSFORMER JK502 CENTRE SPEA...

Страница 61: ...1 J502 J503 J522 J523 J525 W2A W1A J526 CN502 Q519 R590 J529 J540 R401 C556 FC501 FC502 F1 125V 2A B C E B C E B C E B C E 1 2 3 4 6 1 2 7 6 5 4 3 2 1 T501 POWER TRANSFORMER BRW W1 W2 BLU H500 W500 J534 J520 1 2 3 4 5 6 7 8 9 10 11 12 D524 R577 H505A W505 1 3 2 T502 SUB TRANSFORMER 4 3 L500 PbF PbF PbF CAUTION RISK OF ELECTRIC SHOCK TOUCH THIS P C B AC VOLTAGE LINE PLEASE DO NOT J534 E EE EG EB GN...

Страница 62: ...ATOR Q515 KTC3199GRTA DC DET SWITCH D528 D527 RLY501 RSY0040M 0 Z501 ERZV10V511CS JK500 L500 RLQZ371 W1 W2 R401 220K R590 1K Q515 Q519 KTC3199GRTA DCDET SWITCH T501 ETP76VSU62CA D527 D530 B0EAKM000122 D529 D525 B0BA6R600008 D530 T502 G4C2AAJ00005 12 11 10 2 4 6 8 9 7 5 3 1 4 3 2 1 2 4 6 7 5 3 1 SCHEMATIC DIAGRAM 3 TO POWER CIRCUIT CN503 ON SCHEMATIC DIAGRAM 2 TRANSFORMER CIRCUIT B SIGNAL LINE B SI...

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